1,882 people (2024 Census estimate, +0.7% since 2020)
722 square miles of land · 3 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
1 active community water system list Oliver County in the area they serve, reporting 588 people served in all (a system that crosses county lines counts its whole population).
| CENTER CITY OF buys surface water · local government · ND3300174 | 588 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
No county jail figure in the national data for Oliver County — not gathered, never hidden. Some counties share a regional jail or have none.
1 school district has its office in Oliver County. School taxes are usually the largest part of a property tax bill.
Spent $4.8 million — $4.3 million to run schools, about $17,355 per student, plus $456,000 on buildings and equipment. Money in: $2.1 million local (mostly property tax), $2.2 million state, $595,000 federal.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Oliver County about $2.6 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
23 bridges in Oliver County: 11 in good condition, 11 fair, and 1 poor (4.3%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
| ND HIGHWAY 200 over CREEK · built 1971 | 940 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $712,807 of work in Oliver County in fiscal 2025, about $380 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
Registration deadlines, early voting and polling places for North Dakota are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Oliver County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Oliver County built: brayden.ozark@gmail.com.
More of North Dakota: the state government and every county in North Dakota.
Nearby counties: Mercer County (27 mi) · Morton County (28 mi) · McLean County (37 mi) · Burleigh County (42 mi) · Grant County (54 mi) · Sheridan County (57 mi).